US4458208A - Pulse width modulated signal amplifier - Google Patents

Pulse width modulated signal amplifier Download PDF

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Publication number
US4458208A
US4458208A US06/367,213 US36721382A US4458208A US 4458208 A US4458208 A US 4458208A US 36721382 A US36721382 A US 36721382A US 4458208 A US4458208 A US 4458208A
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US
United States
Prior art keywords
pulse width
width modulated
modulated signal
field effect
terminals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/367,213
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English (en)
Inventor
Miki Abe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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Publication date
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Assigned to SONY CORPORATION reassignment SONY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ABE, MIKI
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply

Definitions

  • FIG. 3 An example of the pulse width modulated signal amplifier according to the present invention will be described with reference to FIG. 3 in which the parts and elements corresponding to those of FIG. 1 are marked with the same reference numerals and the detailed explanation thereof will be omitted.
  • the flip-flop circuit 15 Since the signal from the C-MOS inverter 6 shown in FIG. 5D is applied through the terminal 16 to the set signal input terminal S of the flip-flop circuit 15 as described above, at the time t 2 the flip-flop circuit 15 is set, namely is made to be in a state such that the high level signal "1" such as +V CC is produced at its output terminal Q and the low level signal "0" such as -V CC is obtained at its inverted output terminal Q.
  • connection switch S1 since the MOS FETs 10p and 10n of the transfer gate circuit 10, which forms the connection switch S1, are supplied with the low level signal "0" and the high level signal "1", respectively, the transfer gate circuit 10 is made conductive, that is, the connection switch S1 becomes the conductive state. While, at this time the MOS FETs 11p and 11n of the transfer gate circuit 11, which makes up the connection switch S2, are supplied with the high level signal "1" and the low level signal "0" so that the transfer gate circuit 11 is not made to be in the conductive state that is, the connection switch S2 is non-conductive.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
US06/367,213 1981-04-10 1982-04-09 Pulse width modulated signal amplifier Expired - Lifetime US4458208A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56054680A JPS57170606A (en) 1981-04-10 1981-04-10 Amplifying circuit for pulse-width-modulated signal
JP56-54680 1981-04-10

Publications (1)

Publication Number Publication Date
US4458208A true US4458208A (en) 1984-07-03

Family

ID=12977495

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/367,213 Expired - Lifetime US4458208A (en) 1981-04-10 1982-04-09 Pulse width modulated signal amplifier

Country Status (9)

Country Link
US (1) US4458208A (enrdf_load_stackoverflow)
JP (1) JPS57170606A (enrdf_load_stackoverflow)
KR (1) KR900004193B1 (enrdf_load_stackoverflow)
AU (1) AU550765B2 (enrdf_load_stackoverflow)
CA (1) CA1173524A (enrdf_load_stackoverflow)
DE (1) DE3213269A1 (enrdf_load_stackoverflow)
FR (1) FR2503961B1 (enrdf_load_stackoverflow)
GB (1) GB2096850B (enrdf_load_stackoverflow)
NL (1) NL8201546A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5672998A (en) * 1995-08-09 1997-09-30 Harris Corporation Class D amplifier and method
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
WO1999038255A3 (en) * 1998-01-22 1999-09-30 Koninkl Philips Electronics Nv Pwm amplifier
EP1049247A1 (en) * 1999-04-27 2000-11-02 STMicroelectronics S.r.l. Class-D amplifier with enhanced bandwidth
US6249182B1 (en) * 1998-11-18 2001-06-19 Intersil Corporation Class D amplifier with bandwidth independent of load impedance
US6281747B2 (en) * 1999-03-09 2001-08-28 Tripath Technology, Inc. Power efficient line driver
WO2001091285A1 (en) * 2000-05-25 2001-11-29 Koninklijke Philips Electronics N.V. Silent start
US6518837B2 (en) * 2000-05-25 2003-02-11 Koninklijke Philips Electronics N.V. Push-pull amplifier
EP1298794A3 (en) * 2001-09-26 2003-10-22 Kabushiki Kaisha Toshiba Pop sound reduction circuit and voice output amplification device
US20050054307A1 (en) * 2001-04-27 2005-03-10 Watts Robert David Signal processing circuit
WO2007099442A1 (en) * 2006-03-03 2007-09-07 Bang & Olufsen Icepower A/S Hybrid feedback controlled oscillation modulator and switching power amplifier system
WO2008144134A1 (en) * 2007-05-15 2008-11-27 Qualcomm Incorporated Output circuits with class d amplifier
US20090222240A1 (en) * 2008-02-29 2009-09-03 Mcclain Stephen B Baler machine monitoring and performance interfaces, systems and methods
US8957726B2 (en) * 2012-10-04 2015-02-17 Semiconductor Components Industries, Llc Amplification circuit and method therefor

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1215247B (it) * 1985-03-13 1990-01-31 Ates Componenti Elettron Dispositivo e procedimento per azzerare un segnale di uscita in un amplificatore a commutazione.
JPS62145906A (ja) * 1985-12-20 1987-06-30 Nec Corp 増幅回路
JPH04281606A (ja) * 1991-03-11 1992-10-07 Matsushita Electric Ind Co Ltd パルス幅変調増幅器
US5451900A (en) * 1993-03-17 1995-09-19 Kabushiki Kaisha Toshiba Pulse width modulation circuit
DE19512383A1 (de) * 1995-04-01 1996-10-10 Nokia Deutschland Gmbh Klasse-D-Leistungsverstärker
DE19620693C1 (de) * 1996-05-22 1997-06-26 Becker Gmbh Verstärkerschaltung
US5767740A (en) * 1996-09-27 1998-06-16 Harris Corporation Switching amplifier closed loop dual comparator modulation technique
US6118336A (en) * 1998-10-30 2000-09-12 Intersil Corporation Start-up circuit for self oscillating class D modulator
EP1001526B1 (en) * 1998-11-13 2005-04-20 STMicroelectronics S.r.l. PWM bridge amplifier with input network configurable for analog or digital input not needing a triangular wave generator
WO2002058229A1 (en) * 2001-01-18 2002-07-25 Dlogix Co., Ltd. Digital power amplifier
US20070139109A1 (en) * 2005-12-21 2007-06-21 Jun Honda Class d amplifier with start-up click noise elimination
EP3231086B1 (en) * 2014-12-08 2020-06-03 Icepower A/S Self-oscillating amplifier with high order loop filter
JPWO2019131162A1 (ja) * 2017-12-27 2020-12-17 ソニーセミコンダクタソリューションズ株式会社 増幅器および信号処理回路

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889202A (en) * 1972-11-20 1975-06-10 Tadao Suzuki Muting circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239922A (en) * 1967-04-27 1971-07-21 K D G Instr Ltd Modulated pulse computing circuits
US4061930A (en) * 1976-06-11 1977-12-06 Rohr Industries, Incorporated Base drive inhibit circuit
JPS5947486B2 (ja) * 1976-12-06 1984-11-19 ソニー株式会社 パルス幅変調増巾回路
DE2854196A1 (de) * 1978-12-15 1980-06-26 Bosch Gmbh Robert Schaltungsanordnung zur einschaltverzoegerung bei einer verstaerkerschaltung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889202A (en) * 1972-11-20 1975-06-10 Tadao Suzuki Muting circuit

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5672998A (en) * 1995-08-09 1997-09-30 Harris Corporation Class D amplifier and method
US5805020A (en) * 1996-06-27 1998-09-08 Harris Corporation Silent start class D amplifier
WO1999038255A3 (en) * 1998-01-22 1999-09-30 Koninkl Philips Electronics Nv Pwm amplifier
US6300825B1 (en) 1998-01-22 2001-10-09 U.S. Philips Corporation PWM amplifier with feedback loop integrator
US6249182B1 (en) * 1998-11-18 2001-06-19 Intersil Corporation Class D amplifier with bandwidth independent of load impedance
US6281747B2 (en) * 1999-03-09 2001-08-28 Tripath Technology, Inc. Power efficient line driver
EP1049247A1 (en) * 1999-04-27 2000-11-02 STMicroelectronics S.r.l. Class-D amplifier with enhanced bandwidth
US6346852B1 (en) 1999-04-27 2002-02-12 Stmicroeletronics S.R.L. Class-D amplifier with enhanced bandwidth
WO2001091285A1 (en) * 2000-05-25 2001-11-29 Koninklijke Philips Electronics N.V. Silent start
US6518837B2 (en) * 2000-05-25 2003-02-11 Koninklijke Philips Electronics N.V. Push-pull amplifier
US7046080B2 (en) 2001-04-27 2006-05-16 Robert David Watts Signal processing circuit
US20050054307A1 (en) * 2001-04-27 2005-03-10 Watts Robert David Signal processing circuit
EP1298794A3 (en) * 2001-09-26 2003-10-22 Kabushiki Kaisha Toshiba Pop sound reduction circuit and voice output amplification device
US7142048B2 (en) 2001-09-26 2006-11-28 Kabushiki Kaisha Toshiba Pop sound reduction circuit and voice output amplification device
WO2007099442A1 (en) * 2006-03-03 2007-09-07 Bang & Olufsen Icepower A/S Hybrid feedback controlled oscillation modulator and switching power amplifier system
US8013678B2 (en) 2006-03-03 2011-09-06 Bang & Olufsen Icepower A/S, Gi. Hybrid feedback controlled oscillation modulator and switching power amplifier system
CN101395793B (zh) * 2006-03-03 2012-08-29 B&Oice动力公司 混合反馈控制的振荡调制器和开关功率放大器系统
WO2008144134A1 (en) * 2007-05-15 2008-11-27 Qualcomm Incorporated Output circuits with class d amplifier
US8022756B2 (en) 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
US8536938B2 (en) 2007-05-15 2013-09-17 Qualcomm, Incorporated Output circuits with class D amplifier
US8633763B2 (en) 2007-05-15 2014-01-21 Qualcomm Incorporated Output circuits with class D amplifier
US20090222240A1 (en) * 2008-02-29 2009-09-03 Mcclain Stephen B Baler machine monitoring and performance interfaces, systems and methods
US8957726B2 (en) * 2012-10-04 2015-02-17 Semiconductor Components Industries, Llc Amplification circuit and method therefor

Also Published As

Publication number Publication date
FR2503961B1 (fr) 1986-03-28
DE3213269A1 (de) 1982-11-04
KR840000112A (ko) 1984-01-30
NL8201546A (nl) 1982-11-01
KR900004193B1 (en) 1990-06-18
DE3213269C2 (enrdf_load_stackoverflow) 1992-04-02
GB2096850B (en) 1984-10-17
AU550765B2 (en) 1986-04-10
AU8237382A (en) 1982-10-14
JPS57170606A (en) 1982-10-20
CA1173524A (en) 1984-08-28
GB2096850A (en) 1982-10-20
FR2503961A1 (fr) 1982-10-15

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